The ReadyNAS can provide protection of shared folders and LUNs through snapshots. Snapshots contain references to data on a shared folder or LUN. Strictly speaking, snapshots are not backups, but they function as backups because you can recover data from snapshots.
You can take snapshots only of shared folders or LUNs. You cannot take a snapshot of a volume. Snapshots reside on the same volume as the shared folder or LUN from which they were created.
The ReadyNAS can automatically take snapshots of a shared folder or LUN according to a schedule that you specify. You can also manually take or delete individual snapshots at any time. Depending on available storage space, you can keep an unlimited number of snapshots.
Once protection is available, the shared folders and LUNs on the Shares screen indicate the number of snapshots and the number of days with protection.
